Is there a better time traveller than Pedro Almodóvar? Who offers a smoother ride? His new film, “Parallel Mothers,” starts with a photographer, Janis (Penélope Cruz), snapping pictures of a fellow named Arturo (Israel Elejalde). Afterward, over a bottle of wine, they talk. Jump ahead a little, and we hear him calling to arrange another meeting. Jump again, and we see the white curtains of her apartment, in Madrid, billowing like sails in the breeze: a rapturous image, which tells us, with mysterious clarity, that love is being made inside the room. One last jump takes us to Janis, in a hospital, preparing to have Arturo’s child. The movie is eight minutes old, and already months have passed, two lives have been turned upside down, and a third life…